Home / 18,085.80-27,128.70-7,697.55

Finding the Fourth Proportional to 18,085.80, 27,128.70 and 7,697.55

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Solution

The fourth proportional to 18,085.80, 27,128.70 and 7,697.55 is: 11,546.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,085.80 : 27,128.70 = 7,697.55 : x
  2. Step 2: Convert to fraction form
    18,085.80/27,128.70 = 7,697.55/x
  3. Step 3: Cross multiply
    18,085.80x = 27,128.70 × 7,697.55
  4. Step 4: Simplify right side
    18,085.80x = 208,824,524.69
  5. Step 5: Solve for x
    x = 208,824,524.69/18,085.80
  6. Step 6: Final answer
    x = 11,546.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.